So sánh phương pháp

	Trừ nền	Cân bằng lược đồ mức xám
Lĩnh vực	Thị giác máy tính	Thị giác máy tính
Họ	Machine learning	Machine learning
Năm ra đời	1999	1970s
Người khởi xướng	Stauffer and Grimson	Signal processing community
Loại	Temporal image analysis	Contrast enhancement and preprocessing
Công trình gốc	Stauffer, C., & Grimson, W. E. L. (1999). Adaptive background mixture models for real-time tracking. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 246–252.	Gonzalez, R. C., & Woods, R. E. (1992). Digital Image Processing. Addison-Wesley, 2nd edition, Chapter 3.
Tên gọi khác	Foreground detection, Video segmentation	Histogram stretching, Contrast enhancement
Liên quan	5	5
Tóm tắt	Background subtraction is a video processing technique that separates moving foreground objects from a static or slowly changing background by comparing each frame to a learned or estimated background model. Widely used in video surveillance and motion detection, background subtraction enables robust foreground detection even in complex scenes with illumination changes.	Histogram equalization is an image preprocessing technique that redistributes pixel intensities to improve contrast and visibility of details. By spreading the histogram of pixel values evenly across the available range, histogram equalization enhances images with poor contrast, making features more visually distinct and easier to process algorithmically.